Means fob regulating the cooling of ij-tteenal-combtistion engines



Jan. 29, 1924. v 1,482,129

W. S. GOLL I MEANS FOR REGULATING THE COOLING OF INTERNAL COMBUSTION EN GINES Filed Dec. 31, 1920 Fig.

IIIIIIIIJIIIII! IRVEZTKC OT. Walder 5. 60H. by y frd wag Patented Jan. 29, 1924.

UNITED STATES WALTER S. GOLL. 015 FORT WAYNE. INDIANA.

MEANS FOR REGULATINGTHE COOLING 0F INTERNAL COMBUSTION ENGI NES.

Application med December 31. 1920. Serial No. 434,291.

T 0 (ill whom if may; -mm'rii Be it known that 1. human B. (ionn. a citizen of the l nitcd States. residing at Fort \Vavne. county of Allen. Ftatc of Indiana. hav c invented certain new and useful Tmp-rovenicnts in Means for licgnlatim, the (ooling of lnlcrnal-('omliustion Engines. of which the iollowin; is a specification.

in connection with internal combustion engines. it is necessary to provide a cooling means for them in order to ltccp the temperaturewithin permissible limits. and it is desirable that such cooling means he rcgnlated to keep at all times the engine at a temperature for eflicicnt operation.

The primary object of my invention is to provide an improved means for regulation the cooling of an internal combustion cnginc which means is simple in structure. easily applied to an engine. and which although small in size has ample p wer f r perform ing the'work required of it.

One application of my invcntion is in connection with automobiles wherein the flow of air for cooling the engine eith r directly. as in the case of air-cooled cngincs or indirectly. as in the case 0i \Vtlii'P-(Hfilfli engines, is controlled by shutters placed in the path of the air stream. and more particularly an object of my invention is to provide an improved structure and arraiurcmcnt. or means. for automatically actuating such shutters.

A practicahlc control dci'iic of the type to which my invention rciati-s must. ha e the following characteristics:

(1) Accuracy of tempcratnrc regulation prefcralilv not to cxcccd a variation of i degrees F.

(ll ufficient power to operate shutters under ail driving conditions from idlitn to maximum speed and from closed to Whit} open throttle.

(3) h laxinnlm power zi'iaiiaiilc at maximum rate oi licat input t ilit ooling :ne dinm. i

(4) licturn oi' shntt'crs to -iosctl ondition ilmnediately upon stoppage of the engine to conserve heat.

(5) (alihration means to cnalrlc maintenance of most cflicicnt tcmpera'rnrc to'r snnimer conditions and to prevent. loss of antifreeze mixture (such as alcohol) for winter conditions.

(6) ('losin of shutters to conserve heat when the, car over-runs the engine, e. g

when the engine is used as a brake in coasting down grade.

(7) Simplicity of mechanism to insure n-liahility of operation.

A. further object of my invention is to provide an improved device which will meet: the above conditions in a satisfactory manlHT'.

For a consideration of what I believe to ll! novel and my invention, attention is dircctcd to the accompanying description and the claims appended thereto.

in the drawing. Fig. 1 is a side elevation partly in section of an embodiment of my imcntion. and Figs. 2 and 3 are views of iit'l HilF.

Referring to the drawing, 5 indicates an inn-mal combustion engine, 6 a radiator, and T a hose connecting the upper portion oi tlncooling jackets of the engine cyliniiui's to the radiator. Only portions of the tt fglllt and radiator are shown in the drawin and they are to .be taken as typical of car suitable or known engine and radiator nrraugclncnt such as are in common use on antoniohiles for example. Arranged in front of radiator 6 IS a suitable frame 8 in which arc pivotaily mounted shutters 9. Shutters ti tllt' fastened to each other by links 10, the arrangementbeing 'such that the shutters opcn and close in unison. In Fig.1 shutters 5' are shon'mcloscd and their open positions we indicated in dotted lines. The shutters :irc hiascd toward closed position by their o igin assisted. if found desirable, by a prim! or other suitable means. the arrangenicnt being such that. when released they will more to closed position automatically. is \Ytll understood a shutter arrangemerit as shown operates to regulate, the flow of ail through the radiator for cooling the wat r circulatii'ig therein. the amount of air [lowing through depending on the degl'cc to which the shutters we opened.

Now. according to-my in vcntion, I actuair the shutters by gas nressure taken directly from one or more cylinders of the engine, tlic application of such pressure to the nicchanism which directly moves the' shut tci's being: controlled by a means. such as a. thcrinostat. responsive to the temperature of the engine or of the cooling medium for thc engine. By this arrangement I obtain .lt'itliliillg gas under pressure from a source already available and at a pressure sufliciently high to make the actuation of the 14 movin engine cylinder.

shutters positive and to not requi'r a large mechanism for moving the shutters.

In the arrangement shown in the drawing, shutters 9 are connected by a link 11 to one arm of a lever 12, the dher arm being connected to a rod 13 carried byva, piston in a cylinder 15 Lever 12 is etween its ends with a pivot pin 6 and is suitably pivoted on a wall of frame 8. Cylinder 15 is suitably Supported by frame 8. Connected to cylinder 15 is a pipe 17 which leads to a closed casing 18 and leading from casing 18 is a pipe 19 which connects tlirou h a small opening 20 directly with the com nstion chamber of an It -will thus be seen that pipes 17 and 19 connect cylinder 15 directly to the combustion chamber of one of the engine cylinders.

he connection of pi cylinder is-made throng contains openin 20 and also forms a casing for an outwar ly opening check valve 22 adapted to close opening 20 to revent flow of pressure fromipes 17 an 19 to the engine. Check va ve 22 is prpvided vwith guide wings 23 beyond which Is a stop- 24 m the form of a in against which the ends of the wings striize to limit outward movement of the valve.

Connected to pipe 17 is a branch pipe 25 which terminates adjacent radiator 6 and has its end su ported in a bracket 26 carried at one end of a her 27. Bar 27 is made of a material which is a good conductor of heat and is fastened directly to the radiator where it will be subjected to the temperature of the cooling medium in the radiator. end of pipe 25 adjacent the radiator is open and is provided with'a seat 1 r a valve 28. Valve 28 has guide wings 29 F end of pipe25 and sliding therein. and is adapted to move toward and away from the end of pipe 25 to vary the size of the 0 cuing. ()n the end of bar 27 remote rom bracket 26 is fixed a block 30 to which one provided 19 to the en ine end of a strip of thermostatic metal 31 is h fastened. The other end of strip 31 pro jccts through an openingBQ in a wall of bracket 26 and rests against the outer end of valve 28. Valve 28 is held against the end of strip 31 by a spring 33. Block 30 is formed of a material whichis a good ion ductor of heat so as to readily transfer heat from bar 27 25, valve 28 and strip 31 form a thermostatically regulated by-pass or dischargeopening in the conduit comprising pipes 17 and 19.

The operation is as foilowsh-Assume the engineis not running and that it and the cooling medium are cold. Under these conditions shutters 9 are closed and thernostatic strip 31 stands in a position to pernit spring 33 to hold valve 28 open as shutters closed a fitting 21 w ich The coated in the b thermostat 31 moves .away

to thermostatic strip 31. Pipe shown in Fig. 1 of the drawing. With the piston 14 stands adjacent the closed end of cylinder 15. There will be no )ressure Uaek of it or in pi s 17 and 19. ll now the en inc is starte on each explosion in the cy inde'r to which pipe 19 is connected a certain amount of gas under pressure will escape through 0 ening 20 into ipe 19 and pass therethroug into casing'18 and thence to pipe 17. ince valve 28 is open the gas pressure will escape from pipe 17 through branch pipe 25 to atmosphere and hence no pressure will be built up back of piston 14. The shutters 9 will remain closed and there will be no circulation of cooling air through the radiator. As a result the engine will quickly heat up the coolin medium and itself become heated. Ifeat from the cooling medium will be quickly transferred throu h bar 27 and block 30 to thermostatic strip 31 and such strip on being heated will bend in a direction to move valve 28 toward closed position. As valve 28 moves toward closed position the escape of pressure past it is retarded and a pressure is thereupon built up in pipe 17 and chamber 18 which pressure is applied to piston 14 tending to move it in a direction to open shutter 9. When a predetermined high temperature is reached valve 28 will be closed to such an extent that the pressure .built up will be suilicient to move piston 14 to open shutters 9 more or less so cooling air can flow through the radiator. As the temperature of the cooling medium, i. e., the engine rises and falls the temperature of the thermostat will likewise rise and fall and will eflect the operation of valve 28 to increase or decrease the pressure behind piston 14 therey moving shutters 9 to regulate the flow of cooling air through the radiator. The enp'ine will he thus maintained automatica ly at the desired temperature. In opening the shutters, piston 14 must move them against the biasing force which tends to old them closed. When the pressure hehind piston 14 decreases the biasing force moves the shutters toward closed position. In the case of valve 28, thermostat 31 moves it toward closed position against the action of spring 33 and when the end of from valve 28 spring 33 causes the valve to follow the t ermostat. and open. Check valve 22 revents flow of pressure from pipe 19 into the engine cylinder. adjusted so the desired temperature for the engine will be maintained under all normal conditions of operation, andthe arrange- The various parts are ment may be such that all graduations of as a IHOHHE for dumping out such impulse and prmidinr 1l snhstantlally continuous and rven pressure mi pistun 14. Any suit,.

able. means may be employed fur this pun 5 pose although l'nnw pro or tu use a form uf rapneit in tin ipe line such as the cusing 18 as shown. sllt'll fl rapan-ily performs tln' intended Yum-thin in an etlicient nninner and at the sun'lr'tiiinsimphein strn-ture and nut likely in lu ennnderanged.

The drawing is iii a diagrammatic nature, some (If the parts being slidwu exaggerated in size fur purposes uf'illnstl'utiuu. In he tnal prur liw opening i is very small. it; 18 dues nut appreriuhly nti'ec't the eoinpressimi in the engine rylincler. For example opening 20 may have a diameter of the order of 0.014) of an im'h.

Sim-e the pressurefor actuating the shut- 20 ters is taken directly from one of the engine (-ylinders. I am enabled to nhtuin a pressure of comparatively high value. This means that the piston and eillinder or other form nl m'nvahle :ihutnient, used for directly 1" tuatiug the sh'uttersmay he made comparatiu'ly nnill so they o cupy hut usmull spare. .\L the name timexample pnwer is always ni'nilnhle fur mo -in}; the Shutters. lhis is a. feature f irnpnrtnneeparticularly in the (use (if autnnmhiles where the spare available is liiniti-cl. in this con-nectiun'it will he unilm-nnm'l that the cylinder and piston arrangement Imwn i unljv one form ofmmii ilv :iliutnirnt \i'hifh may he used in .fil'l\'- in nut my invention, An) form if inur- :ihhhutiu ntnr nressiu'e-ilvire fnund suitable nniy' he utilized. .Xlsn the Ui'rmmtut may he lnruted irt- :iny mintfnnml desirulile for heating lf lll llfctixtltlllt'l with the ten pernturv of tl e engine.

l nrt'hurmni'g; hv inking;pregsure train a n engine (ivlinilv'r t'rir n ieruting thdshutters, l idilizinn-muin-b uf pri-Fsure aim-nil) nruilnlilv. T l ilk :irnids the luv 0i am- :u'hlitiunnl mm'lnmim l'nr ireating:iii m-limtini: pro sure. All that is redu-irwl is the tapping (if the (-ylinder. ll will :rlsn lutinted that the nerln'misni required .l'nimrrrying unt my i invention igtif- .iinrrlfimtiirv. (an lic Iinmufacture l at :il'u w ciistliand is readily applied in may engiim'ur tnrtiin iiilinm lnl crunu'ntifin witli 'th'p jnperiitic'm (If ('heclc valve 252. tl'rifi'rnlvifis-nt such weight and @hfrt-llflrQ-O is n'f-nrie'H'fize U ill? l required ULQpBll'lt isipreater than the mmpressiun PFQSSIU'Q inf the" engineryliinler. n r suit; valve 229mm? tn, permit the-eqrane f gins ijiucler nre'fisure.nnlx.during the expl ig gn 1mhevnfitjm'emiino cylinder. Bv 'this ii ltitllflfffjmefllif n6 ,I-ml-mrned" mixture is g lti t f ifnd. fiirt herrnnr idling of the-engine "is nut-interfered with i ReferringtoglffignGiana 3. it will he; n'nted that" theiend of iaipe 253's adjustablr connected to bracket 26 thl'qugh the intermd'iary of a bushing 26. By turning hushing 26 the end of pipe. 25, which end furnrthe seat for valveQR. can he nmved toward and away fmin the valve 0 an to vary the temperature at whim-h the shutter will he. actuated. The amount (if adjustment required is not large and mdinaril there will he suflivit-nt give in the pipes t0 permit of the necessary adjustments taking! place. If such is not the case, however, any suitable nifez 'n may he prnvided for permitting such adjustment. It is desirable thabsuch 'adjustiuent be. provided for in order to en able maintenance of the most efiieient. temperatures for summer and winter conditions.

While I have shown my improved mechanism as connected to mil one cylinder of the engine. it will be understood of course that; it may be connected to two or more of them if t'nuud desirable. By runner-ting to two or more cylinders greater power may he 0htained. but in actual practice I have found connection to one cylinder to he quite satisfaetory. l I

In accordance with the provisions of the patent stat UHF-S I have described the'prineiple of operation of my invention, together with the apparat-us' Wlllt'll I. now consider to representthe best embodiment, thcreo f. but I desire to have-itundeistnurl that the app ratuu shown is only. illustrative and that the invention may he r'arritjad nut hy other means.

by Letters Patent of tho-United States, is

L An internal rumliustinn engine huving' shutters fur refnilatinp th'e flow'of carding air and pressure actuated means for inrivi ng the shutters characterized h the fact. that, pressure. for mid means is taken 't'lirect lj:

from thivnmulstimi eham'berut' a cylinder (if the engine.

2-. The (-nmhinatiunwith an internal comhustiun engine and heat radiating: means over which uhzpasses tn-r'nol the engine h shutters fur regulating thr-"fimv (if ainm'er said heat l 'tlfll fl't'lng.IIN'zIIlS. and means acm- Whut- I claim as new and desire to secure.

ate-d by e xplrisiun pre sure taken directly from the munhustion rhun'ibcr of a vylindrr of the engine for operating said Shutters.

'3. The (Olflhll'lijtlflfl with an internal honihustinn :tfflglflQ and heat. radiating means over \\lll('ll an passes to Paul the ehrjine 'nf shutters for. regulating the tlt-n'v'nf a'iioven said hentxrudiating means-. 2 movah-lemlnt merit, {p11 mdving said shutters. and a e'rm' dint; rnnnek ting Sri id abutment directly tn n ()Jll'ji'l't'l' (if the engine. whnrliy the: shutters are Reunited- .i-zcfilosion pressure taken fromsu'ehj cylinder.

.4. The dtilnbina-t'ion with an inLeru'al eombnstibn'enginefand heiit, r idia'ting means over whirh air passestoybl theengine, of shut.-v ters for'ii: heat radiating means." i Kiwi/fable abutment for muting szfid shutter'lqfa conduit connect shutters are actuated b "over which of shutters air over said heat radlati'ng means, a.

ing said abutment to a cylinder of the engine whereby the shutters are actuated by pressure taken from such cylinder, and means for dumping out the pressure pulsations from the engine cylinder so a substantially even pressure is applied to said abutment.

5. The combination with an internal combustion engine and heat radiating means over which air passes to cool the engine, of shutters for regulating the flow of air over said heat radiating means, a movable abutment for movingsaid shutters, a conduit connecting said abutment directly to a cylinder of the engine whereby the explosion pressure taken from such cylin er, and temperature responsive means for controlling the application of such pressure to said abutment.

6. The combination with an internal combustion engine and heat radiating means air passes to cool the engine, for' regulating the How of movable abutment for moving said shutters, a conduit connecting said abutment to a cylinder of the engine whereby the shuttersare actuated by such cylinder,'a valve ofpressure from said conduit, and a thermostat responsive to the engine temperature for regulating said valve.

7. The combination with an internal combustion engine and heat radiating means over which air passes to cool the engine, of shutters for regulating the flow of airover said heat radiating means, a movable abutment for movin said shutters,

pressuretakeh from or permitting escape a conduit connecting said abutment to a cylinder of the engine whereby the shutters are actuated by resure taken from such cylinder, means or damping out the pressure pulsations from the engine cylinder so a substantially even pressure is applied to said'abutment, and means responsive to the temperature of the engine for controlling the application of such pressure to said abutment.

8, In combination, an internal combustion engine, cooling means therefor, pressure actuated mechanism for regulating the coolingfmeans, a conduit connecting the pressure actuated mechanismto the combustion chamber of a cylinder of the engine,

.said. conduit having capacity whereby pressure impulses are absorbed, and a dischar e ppening in said conduit the area of whi lS regulated in accordance with the temperature of the engine.

9. In combination, an internal combuscent the radiator 'for controlling combustion engine of pressure actuated means for regulating the cooling of it, a conduit connectin said pressure actuated means to the com ustion chamber of a cylinder of the engine, a valve seat in said conduit, and a valve which normally rests on said seat, said valve being arranged to be opened by the explosion pressure but not by the com ression pressure.

11. The com ination with an internal combustion engine, of a mechanism to be operated, a conduit connecting the mechanism to the combustion chamber of 8, cylinder of theengine, and a valve in said conduit which is biased to its seat and is opened by the explosion pressure but not by the eompresion pressure.

12. The combination with .an internal combustion engine, of means for regulating the cooling of it, apressure actuated device for operating said means, a conduit connecting said pressure actuated-device to the combustion chamber of a cylinder of the engine, the connection to the cylinder being through an orifice of restricted area, an outwardly opening check valve, in said conduit which operis at pressures greater than the compression pressure, and a valve for per- (Ipitting escape of pressure from said con uit.

13. In combination with an internal combustion engine cylinder rovided with a water jacket, a pressure camber connected with the interior of the cylinder, a movable member associated with the pressure chamber and actuated by the pressure thereof, a radiator through which the cylinder jacket-. water circulates, a shutter positioned adjathe- Ssage of cooling air therethrough and 'op fiating connection between the shutter and the'movable member of the pressure chamber.

In witnem whereof, I have hereunto set my hand this 28th day of December, 1920.

WALTER S. GOLL. 

